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Beschikbare talen
Beschikbare talen
Velda décline, en dehors des masses filtrantes fournies, des masses filtrantes à
finalités particulières :
l Masse filtrante à charbon hautement actif Norit (élimine odeurs et colorantes).
l Masse filtrante anti-ammonium (adsorbe ammonium et ammoniac longtemps).
GARANTIE
Velda garantit le bon fonctionnement du filtre pendant une période de 24 mois à
compter de la date d'achat.Voir les conditions et les clauses de garantie figurant sur
le certificat de garantie.
GB
INSTRUCTIONS FOR CROSS-FLOW SWIRL
GENERAL
Clean water is the basis for the biological balance in the garden pond. The most
important factor for a healthy pond environment is the water, since its composition
directly influences the growth of the water plants, the development of micro-orga-
nisms, and the condition of the fish. The water must then also contain all the elements
that are necessary for the biological and chemical processes in the environment.
If all the values are good and the micro-life function well, then there is a biological
balance. A filter installation is a solution for many ponds because often, too many fish
are kept in relation to the volume of the pond water. In a garden pond, fish have much
less water at their disposal than in nature, while the natural balance is also quickly
affected because the fish produce a lot of waste. This is definitely the case when
keeping Koi-carp. The water can be kept clearer through filtration, and the water
circulation ensures enough oxygen. The Cross-Flow Swirl can be used mechanically
as well as biologically to filter water. A short description of both methods follows.
Mechanical working
The working of a mechanical filter is based on removing organic and inorganic
waste particles and - depending on the filter material - removing colour particles.
To prevent the filter material from becoming silted up, it should be regularly rinsed
clean. This normally tedious task is as easy as rinsing the cassettes filled with filter
materials with tap water.
Biological working
The basis of a biological working filter is to obtain a better and quicker conversion of
organic elements through the use of micro-organisms. A biological filter promotes
the general activity of micro-organisms and by doing so, stimulates the growth of
water plants. Use of biological filtration is recommended when there is stagnant
plant growth and/or extreme algae growth. Initially, the filtration will be exclusively
mechanical, but over the course of time, the material becomes biologically active.
The biological working of the filter is stimulated by the inoculation of the filter
material with a special bacterial culture, such as Bacterial Filterstart.
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